/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.db.mpp.execution.schedule;

import org.apache.iotdb.db.mpp.execution.schedule.queue.IndexedBlockingQueue;
import org.apache.iotdb.db.mpp.execution.schedule.task.DriverTask;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * the thread for watching the timeout of {@link DriverTask}
 */
public class DriverTaskTimeoutSentinelThread extends AbstractDriverThread {

    private static final Logger LOGGER =
            LoggerFactory.getLogger(DriverTaskTimeoutSentinelThread.class);

    public DriverTaskTimeoutSentinelThread(
            String workerId,
            ThreadGroup tg,
            IndexedBlockingQueue<DriverTask> queue,
            ITaskScheduler scheduler,
            ThreadProducer producer) {
        super(workerId, tg, queue, scheduler, producer);
    }

    @Override
    public void execute(DriverTask task) throws InterruptedException {
        task.lock();
        try {
            // if this task is already in an end state, it means that the resource releasing will be
            // handled by other threads, we don't care anymore.
            if (task.isEndState()) {
                return;
            }
        } finally {
            task.unlock();
        }
        // if this task is not timeout, we can wait it to timeout.
        long waitTime = task.getDDL() - System.currentTimeMillis();
        while (waitTime > 0L) {
            // After this time, the task must be timeout.
            Thread.sleep(waitTime);
            waitTime = task.getDDL() - System.currentTimeMillis();
        }

        task.lock();
        try {
            // if this task is already in an end state, it means that the resource releasing will be
            // handled by other threads, we don't care anymore.
            if (task.isEndState()) {
                return;
            }
        } finally {
            task.unlock();
        }
        LOGGER.warn(
                "[DriverTaskTimeout] Current time is {}, ddl of task is {}",
                System.currentTimeMillis(),
                task.getDDL());
        task.setAbortCause(FragmentInstanceAbortedException.BY_TIMEOUT);
        scheduler.toAborted(task);
    }
}
